U-boot practically porting Guide
Author: Aaron Wong Aaronwong@engineer.com
U-boot
Transplantation
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I
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Basic: Add a new target board Definition
This article uses the latest U-Boot-1.3.0-rc2.
U-bootIt supports many development boards. In its source code, each Board corresponds to a Board/Folder under the directory (Note: This is not accurate, because som
Training Report
Practical Training Questions:Video Monitoring
Purpose:1,Understand and master the principles of video monitoring;
2,Interpreting the video monitoring source program, understanding and understanding the usage and functions of various data structures in the program;
3Modify the program to enable remote video monitoring and image transmission between two remote PCs, and capture and transmit images;
4,Transplanted to the mini2440 Development B
This two days wrote an LED driver, online also read a lot of posts.
Start thinking very clear, is to see the circuit diagram first, found that LED lights are connected to the GPM port,
Then look at the s3c6410 data manual, first to Gpmcon mouth to write command words, let gpm0-5 set to output, and then to the gpmdat mouth write data words, in the gpm0-5 pin pull low or pull high level,
Thereby controlling the LED's light and extinguish.
1. Circuit diagram
It's obvious that the LED lights are un
The NFS Network File System is mounted on the A8 board.
I admit that I am a newbie. I have no network knowledge to mount the nfs Network File System. It takes five days to mount the nfs Network File System on the A8 board, implements file sharing between A8 boards and virtual machines. Share your personal experience:
The following describes the nfs-based installation.
B
Download the execution file to the Development Board through the Network File System NFS in ubuntu, and run tunfs
Thanks for the hard work, we finally finished the NFS network.
First, the computer and the Development Board need to be connected to the router to form a LAN (I ignored this ...)
PC: Ubuntu 12.04
Development Board: linux 2.6.32.2 click to view ubuntu
I used a simplified method here, but it was code simplification or the sub-governance recursion idea. One is divided into 4, until 2*2 can be solved directly.
The placement of the four dominoes exactly corresponds to: dir [4] [2] = {0, 0}, {0, 1}, {1, 1}, {1, 0 }}; these four directions.
The four directions can be used to determine the four directions of the incomplete position (top left, top right, bottom right, and bottom left ).
Therefore, we can use a loop instead of judging the four directi
flash, mainly reserved for use, such as later can be accessed through the application to read the/DEV/MTDBLOCK4 can be implemented to backup the entire NAND flash. . offset =0x00000000,. Size =1024x768*1024x768*1024x768,//}};; Here is the NAND Flash Setup table for the development Board, because there is only one piece on the board, so there is only a single tableStaticstructS3c2410_nand_set mini2440_nand_
Board--tpyboardv702, this board can locate, send text messages, telephone, and on-board temperature and humidity sensors, photosensitive sensors and buzzer, can DIY a lot of interesting things, below we can use this board and a pressure sensor to do a small weather station, To get a real picture:TPYBoardv702Positionin
Bo Master's first article, Hope Toto support.
1, the first is the wiring.
VCC corresponds to Arduino Development Board 5V
GND Connection Gnd
TXD Connect TX
Rxd receiving RX
GPI00 Connect Gnd (This is uploaded when used, upload must be grounded, otherwise it will cause upload failure)
Wiring is not very simple.
Attach a picture
2. Then download the Esp8266 extension library.
Open the IDE and click File--preferences, as shown in
Fill this URL into t
SQLite, a lightweight database that adheres to the acid-related database management system, is designed to be embedded and is now used in many embedded productsIt occupies very low resources, in the embedded device, may only need hundreds of K of memory is enough. It can support Windows/linux/unix and so on mainstream operating system, and can be combined with many programming languages, such as TCL, C #, PHP, Java, and ODBC interface, also compared to MySQL, PostgreSQL, the two open source worl
Label:Board-level support package Examples xgpio_example.c This file contains a design example using the GPIO driver (xgpio) and hardware * Device. It onlyuses A Channel 1 of a GPIO device. * * This example can is ran on the Xilinx ML300 boardusing the Prototype Pins * LEDs of Theboard connected to the GPIO. This file contains a design instance using Gpio drivers (xgpio) and hardware devices. It only uses a GPIO device of Channel 1. * * This example can be run on Xilinx ML300,
Fault symptom:Lenovo smart plug-in board FAQ.Solution:1. Is there a limit on the electrical appliances connected to Lenovo smart plug-in boards?Lenovo smart plug-in board can be connected to devices with a maximum of 8A current, and the power is about 2000 W. Exceeding this power may cause Lenovo overload protector to pop up. The resistance load (such as electric cooker, electric heater, electric oven, elec
recently, due to the drive experiment on the TQ2440 (ARM9) board, cross-compiling is done on the host (ubuntu13.10) for the system kernel on the front target board. One, cross-compiling of the kernel: 1. Prepare 2.6.30.4 version of the kernel source package, which I use the embedded company provides kernel source package linux-2.6.30.4_20121214.tar.bz2. 2. Open Terminal Input command: Tar vxjf linux-2.6.
First. NFS Service configuration1. Set up the board IP, the same network segment2. Development Board Operation: Ifconfig eth0 192.168.1.203. Test if you can ping the pass: Ping 192.168.1.194. Test whether the board IP is occupied:On the host: sudo ifconfig eth0 down to see if the IP on the Development Board is disconne
Note: If you are using Windows, you can use HyperTerminal: Start-Programs-attachments-communications-HyperTerminalNow we install the configuration minicom under Ubuntu:1. Go to Ubuntu desktop Ctrl+alt+t open terminalInput: sudo apt-get install minicomPassword:Run: sudo minicom-s//configuration minicomSelect the first option Fienames and Paths-enterA (here Set the download path from the board to the PC to manually knock it)B (here set the file path on
The switch in the use of the process, in a dual-machine state can not run, through detection, the signal is the standby side of the circuit board is not normal.
This fault is obviously a hardware failure. First of all, we can replace the circuit board of the standby side with the replacement method. If the fault is still not gone, the real fault is not here. Racks, modules, power supply and connecti
We can see all kinds of message boards on many websites, which is one of the main means of communication between website and visitor. A reasonable design, the interface beautiful message board program can reflect the site from the side of good service, to visitors to leave a good impression, enhance the user's confidence in the site. The message board from the procedural point of view is actually very simpl
This document describes how to modify the iTOP-4418 Development Board user area size. The partition data in the document is for 16GEMMC.Uboot settingsEnter the uboot of the iTOP-4418 as shown in.Enter the command:Setenv FastBoot"Flash=mmc,2:uboot:2nd:0x200,0x78000;flash=mmc,2:2ndboot:2nd:0x200,0x4000;flash=mmc,2:bootloader:boot:0x8000,0x70000;flash=mmc,2:boot:ext4:0x00100000,0x04000000;flash=mmc,2:system:ext4:0x04100000,0x340000000; "Note that the abo
Core Board requirementsKernel: arm Cortex-A8Clock speed: 1 GHzSupport for Neon commandsSupport MPEG-4/MPEG2, H.264/h263, VC-1, DivX video codec 1080p @ 30fpsSupports 2D image acceleration with a maximum resolution of 8000x8000Supports 3D graphics acceleration (Power VR sgx540), OpenGL-1.1 2.0, openvg1.0Supports SD/MMC/sdio interface memory cards, up to 32 GBSupports JPEG hardware encoding/decoding, with a maximum resolution of 8192x8192.• Memory: 4 G
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